Subject: Re: [boost] [Polygon] Template error in CodeWarrior when attempting union on polygon_set_data
From: Simonson, Lucanus J (lucanus.j.simonson_at_[hidden])
Date: 2010-01-21 12:17:41
Kef Schecter wrote:
> I hesitate to mark this as [Polygon] because the error message is in a
> different part of Boost. However, I have little idea what the actual
> cause of the problem is or what any of the relevant stuff even means,
> I figure [Polygon] is as good as anything at the moment...
> As before, this is a custom version of CodeWarrior an embedded ARM
> system, so I have no idea how well it corresponds with other versions
> of CodeWarrior.
Please try polygon in standalone mode and define the BOOST_POLYGON_NO_DEPS macro. In order to use mpl and and or for SFINAE I had to pull in quite a lot of the mpl. My own implementation of these is enabled by the macro and if you see a compiler error with them I'll quickly be able to understand the problem. If you don't see a compiler error with the macro then I can come up with a new macro to exclude mpl dependency but still use enable_if and config.hpp.
> Here is a trivial program that illustrates the problem, using the
> BOOST_VERY_LITTLE_SFINAE patch from the last discussion here:
> #include <iostream>
> #define BOOST_VERY_LITTLE_SFINAE
> #include <boost/polygon/polygon.hpp>
> using namespace boost::polygon;
> using namespace boost::polygon::operators;
> int main()
> polygon_set_data<int> ps;
> ps += rectangle_data<int>(0, 0, 1, 1);
> return 0;
> This results in the following error message :
> Error : illegal use of template argument dependent type 'T::type'
> The error occurs in this part of
> template< typename T1, typename T2, typename T3, typename T4 >
> struct and_impl< true,T1,T2,T3,T4 >
> : and_impl<
> , T2, T3, T4
> , true_
> Any ideas about what's wrong or how to fix it?
> - Kef
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